Prefix Information

The prefix 400 is part of area code 858 serving San Diego, California.

This exchange contains 10,000 possible phone numbers (858-400-0000 through 858-400-9999).

Browse Numbers in This Prefix

858-400-0000-0999 858-400-1000-1999 858-400-2000-2999 858-400-3000-3999 858-400-4000-4999 858-400-5000-5999 858-400-6000-6999 858-400-7000-7999 858-400-8000-8999 858-400-9000-9999

Sample Numbers

(858) 400-0000 (858) 400-1234 (858) 400-2000 (858) 400-3333 (858) 400-4444 (858) 400-5555 (858) 400-6000 (858) 400-7777 (858) 400-8888 (858) 400-9999